Jacob e



(No Model.) v

. J. R. SCOTT.

SKIVING MACHINE.

No. 467,441. I

WITNESSES; vy v" Jigs o5 3-5405 Add ATTORNEYS section of the roller-die.

the direction of arrow 1, Fig. 2.

NlTED STATES PATENT OFFICE.

JACOB R. SCOTT, OF NEV YORK, N. Y.

SKlVlNG-MACHINE.

SPECIFICATION forming part of Letters Patent No. 467,441, dated January 19, 1892. Application filed August 20,1891. Serial No. 403,231. (No model.)

To all whom it may concern.-

Be it known that I, JACOB R. SCOTT, a citizen of the United States, residing at New York, county and State of New York, have invented new and useful Improvements in Skiving-Machines, of which the following is a specification.

This invention relates to a skiving-machine which is intended particularly for preparing the inner surfaces of soles for boots or shoes, but which can also be used for other articles.

The improvements which form the subjectmatter of my present invention are pointed out in the following specification and claims, and illustrated in the accompanying drawings, in which Figure 1 represents an end view looking in Fig. 2 is a rear elevation looking in the direction of arrow 2, Fig. 1. Fig. 3 is a transverse section in the plane a: ac, Fig. 2. Fig. 4 is a longitudinal section of the roller-die. Fig. 5 is a transverse Fig. 6 is a section similar to that shown in Fig. 3, but showing the parts in a different position. Fig. 7 is a plan of a sole prepared on my machine.

In the drawings, the letter A designates the bed-plate, from which rise two standards B B, which form the bearings for the shaft 0. On this shaft is firmly mounted the roller-die D, which is provided with swells or protuberances (Z (1, between which is formed a depression cl. If the machine is to be used for soles of boots or shoes, theinner edges of the protuberances d d are semicircular, to correspond to the inner edges of the shank portions d cZ of the sole S, Fig. 7. The shaft 0 is geared by cog-wheels a a with a countershaft 0, which carries the feed-roller D and which has its bearings in two arms E E, and

' which extend from eyes F, mounted loosely upon the countershaft C. The rear ends of the arms E E are exposed to the action of springs 19 l), which have a tendency to force the feed-roller D up toward the roller-die D. Set-screws c c serve to regulate the upward motion of the feed-roller D. The surface of this feed-roller is fluted, so as to enable the same to take a firm hold of the article to be fed toward the knife H. This knife extends between the rollers D D, and it is secured to a bracket h, which is adjustably secured to one of the standards B by means of a screw h, which passes through aslotin the bracket. A screw 7L2 serves to adjust the bracket up and down, and the knife is secured to the bracket h by means of screws 71. which pass through slots in the knife, so that the cut ting-edge of the latter can be adjusted in the required position toward the roller D D.

From the eyes F extend arms G G, which swing upon the driving-shaft I. This driving-shaft has its bearings in the standards 13 B, and it carries a belt-pulley J and a pinion K, which gears with a cog-wheel L, mounted loosely on the shaft 0. The hub Z of the cogwheelL extendsinto a clutch-section M, which is firmly mounted on the shaft 0 and which car ries a pawlm, which, when free to follow the action of a spring at, Fig. 3, engages one of the teeth t, formed on the hub Zof thecog-wheel L. hen the pawl m is in engagement with this tooth, the cog-wheel M is thrown in gear with the shaft 0 and the rollers D D are set in 1110- tion. The pawl m can be thrown out of gear with the hub of the cog-wheel L by means of a lever N, which swings on the driving-shaft and connects by a rod 0 with a treadle, (not shown,) and in the outer end N of the lever N is socured a dog a which, when the treadle is depressed to the position shown in Figs. 2 and 3, rides upon the circumference of the clutch M, and as soon as it meets the tail of the pawl m the pawl is raised to the position shown in Fig. 3 and the motion of the rollers D D stops. The dog a is secured to the arm N bya screw 17., which passes through a slot, so that when said screw is loosened the dog 02 can be moved in or out. A screw 01 serves to adjust the dog in the required position. The object of this arrangement is to adjust the machine for soles of different lengths, as will be presently more fully explained. Immediately after the treadle has been permitted to rise and the rollers D D have been started the treadle is again depressed, so that when the rollers have completed one revolution the pawl m is thrown out of gear with the hub of the cog-wheel L and the motion of the rollers is stopped.

The roller-die D is provided with a sharpedged tooth p, which is secured to a block 19,

which fits a groove 12 in the roller-die and can be fastened in the required position by a setscrew (1. \Vhen the sole or other article is pushed in between the rollers D D, the tooth p enters the front edge of the sole and retains the same upon the roller-die D, while that portion of the sole which comes in contact with the edge of the knife II is cut away during the revolution of the rollers D D. The tooth 11 must be adjusted so that its distance from the beginning of the protuberances cl d (measured on the circumference of the roller-die) is equal to the distance between the tip of the sole S and the front ends of the shank portions (1 d", Fig. '7. For soles of greater length the tooth 1) must be moved in the direction of arrow 1, Fig. 5, and the length of the dog n must be reduced, and for shorter soles the tooth p is, moved in the opposite direction and the length of the dog a is increased.

I do not claim in this application for a patent anything shown and described in an application filed by me July 1, 1891, Serial No. 308,269.

W hat I claim as new, and desire to secure by Letters Patent, is-

1. In a skiving-machine, the combination, with the splitting-knife H, of a feed-roller D,

arranged below the knife, a roller-die D, ar-

ranged above the knife and provided with protuberances d d and a depression d between the protuberances, a sharpened tooth 19, proejecting outward from the periphery of the roller-die for penetrating the leather sole, and means for rotating the rollers, substantially as described.

2. In a skiving-machine, the combination of a vertically-adjustable bracket h, carrying a horizontal splitting-knife H, means for holdin g the bracket in anyposition of adjustment, a feed-roller D, arranged below the knife, a roller-die D, arranged above the knife and provided with protuberances d d and a depression d between the protuberances, a sharpened tooth p, projecting outward from the periphery of the roller-die for penetrating the leather sole, and means for rotating the rollers, substantially as described.

3. The combination of the feed-roller D, the roller-die D, provided with protuberances d d and a depression cl between the protuberances, a vertically-movable bracket h, slidable on the machine-frame and carrying a horizontal splitting-knife H at its upper end, which projects between the feed-roller and the roller-die, and means for rigidly securing the bracket in different positions on the machine-frame, substantially as described.

at. The combination, in a skiving-machine, of shaft 0, journaled on the machine-frame and having a roller-die D, the drive-shaft I, geared to the roller die shaft, the springpressed arms E, suspended from the drive shaft and geared to the roller-die shaft, the counter-shaft C, mounted in the springpressed arms, the vertically-movable bracket h, slidable on the machine-frame and carrying a horizontal splitting-knife H at its upper end, which projects between the feed-roller and roller-die, a screw it, passing through the bracket and engaging the machine-frame, and a set-screw 77, connecting the machine-frame with the lower end of the bracket, substantially as described.

5. The combination, with a splitting-knife H, of a feed-roller D, arranged below the knife, a roller-die D, arranged above the knife, a sharpen ed tooth p, projecting outward from the periphery of the roller-die for penetrating the leather sole, and means for rotating the feed-roller and roller-die, substantially as described.

6. The combination, with the knife 1-1., of a feed-roller D, a roller-die D, having a longitudinal groove, a block arranged in the groove and provided with a sharpened tooth which projects outward from the periphery of the roller-die for penetrating the leather sole, a set-screw for adjusting the block in the groove of the roller-die, and means for rotating the feed-roller and roller-die, substantially as described.

7. In a skiving-machine, the combination,

said shafts, the driving-shaft I, the cog-wheel L, geared with the driving-shaft and having a toothed hub Z, and the clutch M, having the pivoted pawl m, of the lever N, provided with the adjustable dog a means for adjusting the dog to different positions on the lever, and devices for operating the lever to move the dog into the path of the pawl, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JACOB R. SCOTT.

\Vitnesses: W. HAUFF, E. F. KASTENHUBER.

IOO 

